JPS532869B1 - - Google Patents
Info
- Publication number
- JPS532869B1 JPS532869B1 JP435772A JP435772A JPS532869B1 JP S532869 B1 JPS532869 B1 JP S532869B1 JP 435772 A JP435772 A JP 435772A JP 435772 A JP435772 A JP 435772A JP S532869 B1 JPS532869 B1 JP S532869B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrane Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH32871 | 1971-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS532869B1 true JPS532869B1 (en) | 1978-02-01 |
Family
ID=4184512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP435772A Pending JPS532869B1 (en) | 1971-01-11 | 1972-01-07 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3789086A (en) |
| JP (1) | JPS532869B1 (en) |
| CA (1) | CA955599A (en) |
| CH (1) | CH547278A (en) |
| DK (1) | DK128537B (en) |
| FR (1) | FR2121750B1 (en) |
| GB (1) | GB1323852A (en) |
| NL (1) | NL156404B (en) |
| SE (1) | SE382215B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6020388B2 (en) * | 1974-07-18 | 1985-05-21 | エーザイ株式会社 | Synthesis method of vitamin E aliphatic carboxylic acid ester |
| US4168271A (en) * | 1977-04-13 | 1979-09-18 | Scm Corporation | Unsaturated vitamin E intermediates--dehydro and didehydro α-tocopherols |
| JPS607993B2 (en) * | 1978-01-12 | 1985-02-28 | 株式会社クラレ | Method for producing dl-α-tocopherol |
| US4208334A (en) * | 1978-12-22 | 1980-06-17 | Hoffmann-La Roches Inc. | Process for preparation of α-tocopherol |
| KR950007045B1 (en) * | 1992-04-14 | 1995-06-30 | 주식회사태평양 | Skin cosmetic material containing polyethoxylate vitamin e. |
| JP3839071B2 (en) * | 1993-12-07 | 2006-11-01 | 有限会社ケムフィズ | Chroman derivatives |
| US5663376A (en) † | 1994-07-27 | 1997-09-02 | Eisai Co., Ltd. | Process for the preparation of α-tocopherol |
| DE19524928A1 (en) * | 1995-07-08 | 1997-01-09 | Basf Ag | Process for the rectification of mixtures of high-boiling air and / or temperature sensitive substances, which require a high separation performance, in a fine vacuum, as well as columns suitable for this process |
| DE59610172D1 (en) * | 1996-01-05 | 2003-04-03 | Hoffmann La Roche | Process for the preparation of d, l-alpha-tocopherol in the presence of a perfluoroalkylene sulfonic acid as a catalyst |
| US5908939A (en) * | 1996-11-11 | 1999-06-01 | Roche Vitamins Inc. | Method of making D,L-A-tocopherol |
| DE19757124A1 (en) * | 1997-12-20 | 1999-06-24 | Degussa | Process for the preparation of alpha-tocopherol esters |
| CA2288851A1 (en) | 1998-11-11 | 2000-05-11 | F. Hoffmann-La Roche Ag | Process for manufacturing d,i-alpha-tocopherol |
| DE10011402A1 (en) * | 2000-03-09 | 2001-09-13 | Degussa | Process for the preparation of alpha-tocopherol esters |
| KR101140519B1 (en) | 2004-06-11 | 2012-04-30 | 디에스엠 아이피 어셋츠 비.브이. | Process for the manufacture of chroman derivatives, especially ?-tocopherol and alkanoates thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2411968A (en) * | 1938-03-31 | 1946-12-03 | Hoffmann La Roche | Process for the preparation of synthetic dl-tocopherols |
| DE1300571B (en) * | 1963-12-20 | 1969-08-07 | Merck & Co Inc | Process for the preparation of 7, 8-dimethoxy-2, 5-dimethyl-6-oxy-2- (4 ', 8', 12'-trimethyltridecyl) -chroman |
| US3476772A (en) * | 1966-10-20 | 1969-11-04 | Eastman Kodak Co | Chroman derivatives of 2,5-dimethyl-2,4-hexadiene |
-
1971
- 1971-01-11 CH CH32871A patent/CH547278A/en not_active IP Right Cessation
- 1971-11-23 CA CA128,337A patent/CA955599A/en not_active Expired
- 1971-12-08 NL NL7116848.A patent/NL156404B/en not_active IP Right Cessation
- 1971-12-29 US US00213831A patent/US3789086A/en not_active Expired - Lifetime
-
1972
- 1972-01-07 JP JP435772A patent/JPS532869B1/ja active Pending
- 1972-01-10 SE SE7200222A patent/SE382215B/en unknown
- 1972-01-10 DK DK10372AA patent/DK128537B/en not_active IP Right Cessation
- 1972-01-11 FR FR727200800A patent/FR2121750B1/fr not_active Expired
- 1972-01-11 GB GB118772A patent/GB1323852A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH547278A (en) | 1974-03-29 |
| FR2121750A1 (en) | 1972-08-25 |
| DE2160103A1 (en) | 1972-08-03 |
| FR2121750B1 (en) | 1974-06-21 |
| CA955599A (en) | 1974-10-01 |
| NL156404B (en) | 1978-04-17 |
| DK128537B (en) | 1974-05-20 |
| SE382215B (en) | 1976-01-19 |
| SU440832A3 (en) | 1974-08-25 |
| NL7116848A (en) | 1972-07-13 |
| DE2160103B2 (en) | 1977-01-13 |
| US3789086A (en) | 1974-01-29 |
| GB1323852A (en) | 1973-07-18 |